The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 09, 2001
Filed:
Jun. 29, 1999
Cary P. Allen, Farmington Hills, MI (US);
Durr Environmental, Wixom, MI (US);
Abstract
An ammonia catalytic abatement apparatus and method having two types of catalytic converters in line, wherein the first catalytic converter preferably including platinum as the catalytic agent converts or reduces the ammonia in an ammonia laden gas stream to N,, H,O and approximately equal stoichiometric proportions of NO,and the remaining unconverted NH,. The second catalytic converter which preferably is a selective catalytic reduction (SCR) catalyst then converts substantially all of the NO,+NH,to N,+H,O vapor. The ammonia laden gas stream is first heated to the reaction temperatures of the catalytic converters which in the disclosed embodiment is about 300° C. The disclosed apparatus further includes a recuperative heat exchanger which preheats the gas prior to the heating element.